*Kalluto softens the urging pressure from his lips, writhing wet and snug around Killua's tongue as it slides and pushes through his mouth. His brother's pubic bone thumps into the back of his hand through their clothes.

He threads the needle, finds something as close as he'll get to a prostate in their plastic prisons. He whimpers, knees buckling, as a screaming moan shakes Killua everywhere they're touching. As Kalluto's frame drops, the hand around his brother's nipple is clenched and twisting, pulling on the sensitive nub like a spanner he'd stepped on with his whole weight. He falls inches then recovers, his elbow digging between Killua's thighs as his arm twists, seeking the best leverage to hammer the nerves he just found.*